Reply to thread

Message: [QUOTE="Mdub707, post: 229192, member: 107"] Speaking in general terms (since I've never had an H-11 stud in my hand...) the torque value placed on the nut is only ONE part of the equation of clamping force. A different thread pitch could easily change this. It's quite possible 175 ft-lbs on the H-11's would actually show a higher clamping force than 245 ft-lbs on the ARP's. Are you guys still going to 245 with the ultra-torque lube on the ARP's? Seems like someone with an H-11 could figure out the thread pitch and let us know, hint hint!!! :thumbup: I don't follow the logic behind thinking a higher torque value is going to work any better (either ARP's OR H-11's). A stud is designed with a certain amount of stretch in mind. Now maybe this wont work for every application, but it seems like I would be asking the manufacturer about their recommendations. If a stud is designed with 75% of yield in mind, and you're going more... you're running dangerously close to yielding the stud. Anyone ever looked through ARP's brochure and see the pictures of stud failure and the analysis on it? Pretty interesting stuff. I just keep getting this picture in my head of a caveman going "more is better" which isn't always the case here... As for lube, use whatever the manufacturer recommends. ARP recommends the new ultra-torque, so use that for them. If the H-11's say peanut butter, then use that. I'm sure they've done testing and come up with torque values based on the lube used. There is more than likely a reason they recommend such lube. I talked to an engineer @ ARP about all of this some time ago and it was a very enlightening conversation. Just my thoughts on the subject. [/QUOTE]